97189 has 4 divisors (see below), whose sum is σ = 102924. Its totient is φ = 91456.

The previous prime is 97187. The next prime is 97213. The reversal of 97189 is 98179.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66564 + 30625 = 258^2 + 175^2 .

It is a cyclic number.

It is not a de Polignac number, because 97189 - 2¹ = 97187 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2842 + ... + 2875.

It is an arithmetic number, because the mean of its divisors is an integer number (25731).

2⁹⁷¹⁸⁹ is an apocalyptic number.

It is an amenable number.

97189 is a deficient number, since it is larger than the sum of its proper divisors (5735).

97189 is a wasteful number, since it uses less digits than its factorization.

97189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5734.

The product of its digits is 4536, while the sum is 34.

The square root of 97189 is about 311.7515036050. The cubic root of 97189 is about 45.9768314330.

Subtracting 97189 from its reverse (98179), we obtain a triangular number (990 = T₄₄).

The spelling of 97189 in words is "ninety-seven thousand, one hundred eighty-nine".